To cite package ‘GSparO’ in publications use:

  Hu Y (2026). _GSparO: Group Sparse Optimization_. R package version
  1.0, <https://github.com/cranhaven/cranhaven.r-universe.dev>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {GSparO: Group Sparse Optimization},
    author = {Yaohua Hu},
    year = {2026},
    note = {R package version 1.0},
    url = {https://github.com/cranhaven/cranhaven.r-universe.dev},
  }